Since we don't store a lot of business numbers in our phones, it can be a pain to figure out which unnamed number in your log is the right one. You can use Google Maps, however, to do reverse phone number lookups.

If you don't do regular business with someone, you're not going to store their number in your phone for just a few days, though you may need to follow up on something. Reader Lord_Cathbad writes in with a solution using a Google Maps feature we didn't know about:

I just made a whole bunch of calls to different businesses and ended up with their numbers in my GV memory, but couldn't remember which one is which. By searching the numbers in Google Maps, I could find the names of their business.

This is also useful if a business calls you and you don't know who it is. Thankfully, this doesn't apply to residential numbers—so your privacy is not at stake—but it's still a super handy way to get a businesses' name and location with just their phone number.